#include "ManagedBlasProvider.h"

integer SmartMathLibrary::Blas::Engine::ManagedBlasProvider::idamax_(integer *n,
  doublereal *dx, integer *incx)
{
  /* System generated locals */
  integer ret_val, i__1;
  doublereal d__1;
  /* Local variables */
  static integer i__, ix;
  static doublereal dmax__;
  /*  Purpose   
  =======   
  finds the index of element having max. absolute value.   
  jack dongarra, linpack, 3/11/78.   
  modified 3/93 to return if incx .le. 0.   
  modified 12/3/93, array(1) declarations changed to array(*)   
  Parameter adjustments */
  --dx;
  /* Function Body */
  ret_val = 0;
  if (*n < 1 ||  *incx <= 0)
  {
    return ret_val;
  }
  ret_val = 1;
  if (*n == 1)
  {
    return ret_val;
  }
  if (*incx == 1)
  {
    goto L20;
  }
  /*        code for increment not equal to 1 */
  ix = 1;
  dmax__ = abs(dx[1]);
  ix +=  *incx;
  i__1 =  *n;
  for (i__ = 2; i__ <= i__1; ++i__)
  {
    if ((d__1 = dx[ix], abs(d__1)) <= dmax__)
    {
      goto L5;
    }
    ret_val = i__;
    dmax__ = (d__1 = dx[ix], abs(d__1));
    L5: ix +=  *incx;
    /* L10: */
  }
  return ret_val;
  /*        code for increment equal to 1 */
  L20: dmax__ = abs(dx[1]);
  i__1 =  *n;
  for (i__ = 2; i__ <= i__1; ++i__)
  {
    if ((d__1 = dx[i__], abs(d__1)) <= dmax__)
    {
      goto L30;
    }
    ret_val = i__;
    dmax__ = (d__1 = dx[i__], abs(d__1));
    L30: ;
  }
  return ret_val;
} /* idamax_ */
